Overload Clutch - DeWalt D25430 Manual

WARNING:
• Be aware of the location of pipework
and wiring.
• Apply only a gentle pressure to
the tool (approx. 5 kg). Excessive
force does not speed up drilling but
decreases tool performance and may
shorten tool life.
• Do not drill or drive too deep to
prevent damage to the dust cover.
• Always hold the tool firmly with both
hands and ensure a secure stance
(fig. 7). Always operate the tool with
the side handle properly mounted.
Proper Hand Position (fig. 7)
WARNING: To reduce the risk of
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
Proper hand position requires one hand on the
side handle (f), with the other hand on the main
handle (b).

Overload Clutch

If the drill bit becomes jammed or caught, the drive
to the drill spindle is interrupted by the overload
clutch. Because of the forces that occur as a result,
always hold the machine securely with both hands
and take a firm stance.
Switching On and Off (fig. 1)
1. To run the tool, press the variable speed
switch (a). The pressure exerted on the variable
speed switch determines the tool speed.
2. To stop the tool, release the switch.
3. To lock the tool in the off position, move the
forward/reverse slider (c) to the central position.
Hammerdrilling (fig. 1, 3)
DRILLING WITH A SOLID BIT
1. Set the mode selector switch (d) to the
hammerdrilling position. Refer to Selecting
the Operating Mode in Assembly and
Adjustments.
2. Insert the appropriate drill bit.
NOTE: For best results use high quality carbide-
tipped bits.
3. Adjust the side handle (f) as required.
4. If necessary, set the drilling depth.
5. Mark the spot where the hole is to be drilled.
6. Place the drill bit on the spot and switch on the
tool.
7. Always switch off the tool when work is finished
and before unplugging.
Drilling with a Core Bit (fig. 1, 3)
1. Set the mode selector (d) to the hammerdrilling
position. Refer to Selecting the Operating
Mode in Assembly and Adjustments.
2. Adjust the side handle (f) as required.
3. Insert the appropriate core bit.
4. Assemble the centredrill into the core bit.
5. Place the centredrill on the spot and press the
variable speed switch (a). Drill until the core
penetrates into the concrete approx. 1 cm.
6. Stop drilling and remove the centredrill. Place
the core bit back into the hole and continue
drilling.
7. When drilling through a structure thicker than
the depth of the core bit, break away the round
cylinder of concrete or core inside the bit at
regular intervals. To avoid unwanted breaking
away of concrete around the hole, first drill a
hole the diameter of the center drill completely
through the structure. Then drill the cored hole
halfway from each side.
8. Always switch off the tool when work is finished
and before unplugging.
Rotary Drilling (fig. 1, 3)
D25413, D25415 ONLY
1. Set the mode selector switch (d) to the
rotary drilling position. Refer to Selecting
the Operating Mode in Assembly and
Adjustments.
2. Fit the chuck adapter/chuck assembly.
3. Proceed as described for hammerdrilling.
WARNING: Never use standard chucks
in the hammerdrilling mode.
Screwdriving (fig. 1, 3)
D25413, D25415 ONLY
1. Set the mode selector switch (d) to the
rotary drilling position. Refer to Selecting
the Operating Mode in Assembly and
Adjustments.
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